Ripping
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@vtrn_raptor Depends whether the bore needed doing.
If you didn't hone it or bore it and merely changed the rings, then 50 miles would suffice.
You should be free to rip roar now mate.
When you hone or rebore it I'd recommend 300 miles. 1000 on a fuel rebuild. But rings, 50 miles will suffice.
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3 heat cycles, gentle hour odd ride, another couple rides varying the revs and then I just hammered mine, that was after a fresh bore, wossner piston at 0.2mm clearance as recommended. Bike still runs great and pulls strong. I've only done a total of about 150 miles on my DT since I done the engine, was probably hammering it at about 30-40 miles, but I mainly ride offroad so you dont rack up the miles on trails, the main thing to do in a break in is heat cycles, I know many people who do 3 heat cycles and then go for it but id rather be abit more careful.
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Any source for the benefits of doing heat-cycles?
Have seen it mentioned from time to time, but never seen anything to back it up.
Thanks man
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@jens-eskildsen I've seen it mentioned...on RC cars.
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@ricky0115 MX aren't built to last mate. You can't compare a road going engine, to an engine that is only supposed to last 40 hours lol.
@Irongamer727 Yeah, on a full nut and bolt road going rebuild, crank, mains, gearbox, I would put a 1k miles into before I'd saying it's run it.
You may be misinterpreting the run in procedure for an engine. Which I am not going to describe, lots of conflicting information about that elsewhere, but it doesn't mean drive like your nan for 1k miles.
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MX bikes runs way bigger piston to cylinder tolerances last time I compared
